WR08X8661FTL Equivalent & Substitute Parts

Part Overview

The WR08X8661FTL is an 8.66 kOhms ±1% thick film chip resistor manufactured by Walsin Technology Corporation in 0805 (2012 Metric) package format. This component is rated for 0.125W (1/8W) power dissipation and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is RoHS3 compliant with MSL 1 rating, indicating unlimited moisture sensitivity protection. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit applications without design modification.

Substiute Parts

WR08X8661FTL

Walsin Technology CorporationIn Stock: 1059WR08X8661FTL Datasheet

Current PartRFQ

CR0805-8W-8661FT

VenkelIn Stock: 25345CR0805-8W-8661FT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WR08X8661FTL is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Resistance value (8.66 kOhms), tolerance (±1%), power rating (0.125W), and temperature coefficient (±100ppm/°C) must be identical. These parameters ensure functional interchangeability in circuit operation.

Mechanical Parameters: Package designation (0805/2012 Metric), number of terminations (2), and physical dimensions (0.079" L x 0.049" W) must match to ensure PCB footprint compatibility and assembly process compatibility.

Composition & Material: Thick film construction must be maintained to preserve electrical performance characteristics and thermal behavior.

Compliance & Certification: RoHS3 compliance and MSL 1 rating must be present in substitute parts to meet regulatory and environmental requirements equivalent to the original component.

The identified substitute CR0805-8W-8661FT from Venkel meets all these criteria and qualifies as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

The CR0805-8W-8661FT from Venkel is electrically and mechanically equivalent to the WR08X8661FTL. Both components share identical resistance values, tolerance specifications, power ratings, and temperature coefficients. The physical dimensions and package footprint are equivalent, ensuring compatibility with existing PCB designs without layout modification.

Both parts maintain Active product status and carry ROHS3 compliance certification, meeting current regulatory requirements. The MSL 1 rating on both components indicates unlimited moisture sensitivity protection, suitable for standard storage and handling conditions.

The CR0805-8W-8661FT demonstrates higher inventory availability (25,322 pieces) compared to the WR08X8661FTL (1,015 pieces), which may influence supply chain decisions. The maximum seated height of the Venkel part (0.024" / 0.60mm) is marginally lower than the Walsin part (0.026" / 0.65mm), remaining within acceptable PCB assembly tolerances.

Selection between these parts is based on availability, lead time, and supplier preference, as electrical and mechanical performance are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the CR0805-8W-8661FT replace the WR08X8661FTL in existing designs?

A: Yes. The CR0805-8W-8661FT is a direct substitute. Both components share identical electrical specifications (8.66 kOhms ±1%, 0.125W, ±100ppm/°C), mechanical dimensions (0805 package, 2.00mm x 1.25mm), and compliance certifications (ROHS3, MSL 1). No circuit design or PCB layout modifications are required.

Q: Are there any dimensional differences between these parts?

A: The maximum seated heights differ slightly. The WR08X8661FTL has a maximum seated height of 0.026" (0.65mm), while the CR0805-8W-8661FT measures 0.024" (0.60mm). This 0.002" (0.05mm) difference is within standard PCB assembly tolerances and does not affect functionality or compatibility.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the WR08X8661FTL and CR0805-8W-8661FT are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. They meet equivalent environmental and regulatory standards for electronic component use.

Q: What is the significance of the 0805 package designation?

A: The 0805 designation refers to the 2012 Metric package format, indicating physical dimensions of 0.079" length by 0.049" width (2.00mm x 1.25mm). Both substitute parts use this identical package, ensuring footprint compatibility with existing PCB designs without requiring layout changes.

Q: Are the temperature operating ranges identical?

A: Yes. Both components operate across the identical temperature range of -55°C to 155°C with a temperature coefficient of ±100ppm/°C, ensuring equivalent thermal performance in circuit applications.

Q: What packaging format is used for both parts?

A: Both the WR08X8661FTL and CR0805-8W-8661FT are supplied in Tape & Reel (TR) format, standard for automated PCB assembly processes.